package com.common.project.util;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;


public class ImportExcelUtil {  
      
    private final static String excel2003L =".xls";    //2003- 版本的excel
    private final static String excel2007U =".xlsx";   //2007+ 版本的excel
      
    /** 
     * 描述：获取IO流中的数据，组装成List<List<Object>>对象 
     * @param in,fileName 
     * @return 
     * @throws IOException  
     */  
    public  List<List<Object>> getBankListByExcel(InputStream in,String fileName) throws Exception{  
        List<List<Object>> list = null;  
          
        //创建Excel工作薄  
        Workbook work = this.getWorkbook(in,fileName);
        if(null == work){  
            throw new Exception("创建Excel工作薄为空！");  
        }  
        Sheet sheet = null;
        Row row = null;
        Cell cell = null;
          
        list = new ArrayList<List<Object>>();  
        //遍历Excel中所有的sheet  
        for (int i = 0; i < work.getNumberOfSheets(); i++) {  
            sheet = work.getSheetAt(i);  
            if(sheet==null){continue;}  
              int jj=sheet.getLastRowNum();
              System.out.println("sheet读出的最后一行是:########"+jj);
              int ff=sheet.getFirstRowNum();
              System.out.println("sheet读出的第一行是:########"+ff);
            //遍历当前sheet中的所有行  
//            for (int j = sheet.getFirstRowNum(); j <sheet.getLastRowNum(); j++) {
            int maxLie=0;
            for (int j = sheet.getFirstRowNum(); j <=sheet.getLastRowNum(); j++) {
//                row = sheet.getRow(j+1);
                row = sheet.getRow(j);

                /*if(row==null||row.getFirstCellNum()==j){continue;}*/
                if(row==null){continue;}
                  
                //遍历所有的列  
                List<Object> li = new ArrayList<Object>();
                if(j==0){
                    maxLie=row.getLastCellNum();
                }
                for (int y = row.getFirstCellNum(); y < maxLie; y++) {
                	cell = row.getCell(y);
                    li.add(this.getCellValue(cell));  
                }  
                list.add(li);  
            }  
        }  
        //work.close();
        in.close();
        return list;
    }  
      
    /** 
     * 描述：根据文件后缀，自适应上传文件的版本  
     * @param inStr,fileName 
     * @return 
     * @throws Exception 
     */  
    public Workbook getWorkbook(InputStream inStr, String fileName) throws Exception{
        Workbook wb = null;
        String fileType = fileName.substring(fileName.lastIndexOf("."));  
        if(excel2003L.equals(fileType)){  
            wb = new HSSFWorkbook(inStr);  //2003-
        }else if(excel2007U.equals(fileType)){  
            wb = new XSSFWorkbook(inStr);  //2007+
        }else{  
            throw new Exception("解析的文件格式有误！");  
        }  
        return wb;  
    }  
  
    /**
     * 描述：对表格中数值进行格式化 
     * @param cell 
     * @return 
     */
    @SuppressWarnings("deprecation")
	public  Object getCellValue(Cell cell){
    	
        Object value = null;  
        DecimalFormat df = new DecimalFormat("0");  //格式化number String字符
        SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd");  //日期格式化
        if(cell != null){
        	 switch (cell.getCellType()) {

                 case Cell.CELL_TYPE_STRING:
//             case STRING:
                 value = cell.getRichStringCellValue().getString();  
                 break;
                 case Cell.CELL_TYPE_NUMERIC:
//                 case NUMERIC:
                 if("m/d/yy".equals(cell.getCellStyle().getDataFormatString())){
                     value = sdf.format(cell.getDateCellValue());
                 }else if("General".equals(cell.getCellStyle().getDataFormatString())){
                  value = df.format(cell.getNumericCellValue());
                 }else{
                     value =cell.getNumericCellValue();
                 }
                 break;
                 case Cell.CELL_TYPE_BOOLEAN:
//                 case BOOLEAN:
                 value = cell.getBooleanCellValue();  
                 break;
                 case Cell.CELL_TYPE_BLANK:
//                 case BLANK:
                 value = "";  
                 break;  
             default:  
                 break;  
             }  
        }
        return value;  
    }







}